![My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife](https://external-preview.redd.it/NvG4HIu_bEH5DgbX1lGQCgbvfZjMlPbjr3eI1w-E4j4.jpg?auto=webp&s=3811b77da08ad89f7db3af3a0a8af05b2d553827)
My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife
![Casio - Personal M-1 H-813B - - Vintage calculator - Casio Personal M1 H813B - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - Personal M-1 H-813B - - Vintage calculator - Casio Personal M1 H813B - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/zoom/personalM1H813B.jpg)
Casio - Personal M-1 H-813B - - Vintage calculator - Casio Personal M1 H813B - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![Casio - Personal M-1 H-813 - - Vintage calculator - Casio Personal M1 H813 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - Personal M-1 H-813 - - Vintage calculator - Casio Personal M1 H813 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/PersonalM1H813.jpg)
Casio - Personal M-1 H-813 - - Vintage calculator - Casio Personal M1 H813 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![Retro/Vintage Casio Personal M1 8 Digit Black LCD Electronic Calculator | Retro vintage, Retro, Vintage Retro/Vintage Casio Personal M1 8 Digit Black LCD Electronic Calculator | Retro vintage, Retro, Vintage](https://i.pinimg.com/originals/94/69/a3/9469a3839ffe54ed140917d390a844e8.jpg)